A crumbling wizard is one of the final reminders of a roadside Middle Earth.

A trash dump made beautiful by nature's power.

A raised boardwalk winds through a thicket of stunted, century-old trees no more than nine feet tall.

One of only five observatories in the world built to measure the Earth's wobble.

A New York warehouse filled with an enormous amount of goods saved from the landfills and donated for creative use.

Adolph Sutro's little-known, geographically inaccurate, deprecated monument.

A sculpture of a salmon swimming through a brick building.

An enchanting tunnel of cypress trees leads to an old morse code station still used today.

Forgotten and then destroyed by fire, this was once one of the largest saltwater swimming pools in the world.

This grinning pup statue is all that's left of what was once a ubiquitous Bay Area diner chain.

The remains of a 12th-century chapter house in Golden Gate Park.

Once the site of speeding horses, now home to picnickers and public concerts.

Perfect your fly fishing technique on their practice ponds.

A monument to the love people have for their pets.

Guns that have been defending San Francisco since 1904.

A 300-ship graveyard, with a few still visible at low tide.

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

A playing field for a popular French past time can be found tucked away in a quiet corner of Golden Gate Park.

The remains of a ruined mansion memorialize the 1906 earthquake.

A monumental cross hides in the trees in Golden Gate Park.

An artsy hidden staircase leads to breathtaking views of San Francisco.

Gold Rush-era tombstones line the park's paths.